Provided is a welding joining method for joining end portions of first and second pipes made of polyamide resin by bonding the end portions to each other by pressure in a molten state. The welding joining method includes: a placing step of placing an infrared radiation lamp between the first and second pipes placed to face each other at an interval; a heating and melting step of heating and melting the end portions of the first and second pipes by emitting infrared; and a pressure bonding step of cooling down the molten end portions in a state where the molten end portions are bonded to each other by pressure.

At least one exemplary embodiment is directed to an earpiece having a balloon and a stent where the balloon is mounted on the stent and the stent incorporates two or more channels including at least an inflation channel and an acoustic channel. In some embodiments the stent is configured to pass audio signals through the acoustic channel where the acoustic channel is independent of the inflation channel of the balloon. Other embodiments are disclosed.

Techniques for implementing a pipeline system that includes a pipe segment and a pipe fitting. The pipe segment includes tubing, which includes an inner barrier layer that defines a pipe bore, a reinforcement layer implemented around the inner barrier layer to define a fluid conduit, and an outer barrier layer implemented around the reinforcement layer, and a tensile clip secured to the tubing such that clip legs of the tensile clip are secured around the reinforcement layer. The pipe fitting includes electrofusion material implemented to define a fitting bore and a tubing cavity in which the tubing is to be secured and a tensile hook partially embedded within the electrofusion material such that a hook bend extends into the tubing cavity, in which the hook bend matingly interlock with a loop end of the tensile clip to facilitate transferring tensile force between the reinforcement layer and the pipe fitting.

A machine for fitting pipe and components together that has a traveling beam that rolls over a support structure. Various clamps, vices and other devices to hold pipes and fittings are attached to the beam or other parts of the support structure. Motion could be in any direction so as to algin pipes or fittings to be in position to be joined together.

An imaging window of an imaging catheter includes a first imaging window section and a second imaging window section. The first imaging window section has a finite length and is formed from a first material having a flexural modulus. The second imaging window section has a finite length and is formed from a second material having a flexural modulus. The flexural modulus of the first material is different than the flexural modulus of the second material.

A method of making a high flexibility distal zone on a neurovascular catheter is provided. The method includes the steps of dip coating a removable mandrel to form a tubular inner layer on the mandrel, coating the tubular inner layer with a tie layer, applying a helical coil to the outside of the tie layer, positioning a plurality of tubular segments, heating the tubular segments to form the high flexibility distal zone on the neurovascular catheter; and removing the mandrel.

Disclosed herein is a piping system for an air conditioner, in which a refrigerant pipe being an air conditioning piping of a vehicle and a flange member are each made of a plastic material, and the refrigerant pipe and the flange member can be connected by laser fusing. That is, the present disclosure provides the piping system for an air conditioner, in which the refrigerant pipe and the flange member are each made of a plastic material having a vibration insulation effect and are connected by laser fusing which can prevent damage so that an effect of weight reduction and vibration insulation can be provided and a pressure loss of a refrigerant fluid can be minimized by maintaining a diameter of the refrigerant pipe to be constant with respect to an overall length of the refrigerant pipe.

A fitting or connector for use in constructing a tubing assembly is made by bonding an olefin gasket to an end face of a polypropylene fitting member. The gasket is bonded to the fitting member via a heat fusion technique that causes localized melting together of the gasket and the fitting and generates a composite fitting or connector.

A thermoplastic filament comprising multiple polymers of differing flow temperatures in a regular geometric arrangement, and a method for producing such a filament, are described. Because of the difference in flow temperatures, there exists a temperature range at which one polymer is mechanically stable while the other is flowable. This property is extremely useful for creating thermoplastic monofilament feedstock for three-dimensionally printed parts, wherein the mechanically stable polymer enables geometric stability while the flowable polymer can fill gaps and provide strong bonding and homogenization between deposited material lines and layers. These multimaterial filaments can be produced via thermal drawing from a thermoplastic preform, which itself can be three-dimensionally printed. Furthermore, the preform can be printed with precisely controlled and complex geometries, enabling the creation of monofilament and fiber with unique decorative or functional properties.

A device for curing resin in a pipe liner using electromagnetic radiation includes a heat sink and LEDs for generating the radiation mounted on the heat sink. The device conducts heat away from the LEDs through the heat sink. The heat sink is positioned in the flow path of cooling fluid that draws heat away by convection. The heat sink can include elements at the ends of the LEDs that are exposed to the cooling fluid. The device can guide the cooling fluid along a flow path that includes a segment that extends over the LEDs. The device can limit fluid flow through a central cavity of the heat sink.